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Strictly Localized Mixed States — arXiv:2609.17013

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.17013
License (as archived): CC0-1.0
Archived: 2026-10-15T22:06:07.344Z
SHA-256 of the archived text: 87b660b796d14f26c4c50e825e8e21c8207bef9d3aa51d7a9500b82f537d884b
Stable URL of this page: https://metraipolis.com/documento/dc_fa46cb3eb219

How to cite

Strictly Localized Mixed States — arXiv:2609.17013 — arXiv (en), https://arxiv.org/abs/2609.17013 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_fa46cb3eb219 (Metraipolis archive dc_fa46cb3eb219, sha256 87b660b796d14f26c4c50e825e8e21c8207bef9d3aa51d7a9500b82f537d884b)

BibTeX

@misc{dcfa46cb3eb219,
  title = {Strictly Localized Mixed States — arXiv:2609.17013},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.17013},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_fa46cb3eb219; sha256 87b660b796d14f26c4c50e825e8e21c8207bef9d3aa51d7a9500b82f537d884b},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.17013. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We study strictly localized mixed states in quantum field theory: states that are indistinguishable from vacuum outside some spacetime region. Such states are generated from the vacuum by so-called Licht maps. While the states associated with individual outcomes of local, projective measurements on the vacuum are not strictly localized, the corresponding non-selective states are strictly localized and even admit decompositions into strictly localized pure states. Remarkably, however, there are strictly localized mixed states that cannot be written as mixtures of pure states strictly localized to the same region. Such states can arise from unsharp local measurements. Finally, we extend Knight's theorem to mixed states, showing that strictly localized bosonic mixed states contain terms with arbitrarily high particle numbers.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-16 in quant-ph).
Categorie arXiv: Quantum Physics (quant-ph) ; High Energy Physics - Theory (hep-th); Mathematical Physics (math-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.17013 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-15T21:52:12.820Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-09-16?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).